View Spec →Oil Filler Cap
The smallest upgrade you'll touch every oil change — and the one that feels like the whole car.
A1-ENG-DP · A1 GradedCatches the metal your filter can't. What you see at the next change tells you everything.
A1-ENG-DPSerialized & inspected · Ships in 1–2 business days
A machined sump plug with a recessed rare-earth magnet strong enough to hold the fine ferrous wear the filter media never sees — so the swarf on the tip at each oil change becomes a free, honest read on the engine's health. Crush washer included; hex broached clean for a proper key fit.
Threaded by application — select vehicle at checkout
View Spec →The smallest upgrade you'll touch every oil change — and the one that feels like the whole car.
View Spec →Synthetic media, a real bypass valve, and a nut welded on for tool-off removal.
View Spec →Keeps blow-by oil out of your intake — so the top end stays as clean as the day it was built.
View Spec →One block of forged aluminum, six pistons, zero flex. The part every other part is measured against.